针对马丘波病毒的糖蛋白特异性多克隆抗体保护几内亚猪免受致命感染
Joseph W Golden1, Steven A Kwilas1, Jay W Hooper1
1Department of Molecular Virology, Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD 21702, USA.
Vaccines
|June 27, 2024
概括
针对马丘波病毒 (MACV) 糖蛋白的多克隆抗体保护了几内亚猪免受致命的感染,即使在暴露后几天内给予. 这表明了针对新世界领域病毒的抗体治疗的潜力.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 新世界 (NW) 领域病毒引起严重疾病,康复性血显示出保护作用.
- 康复期血中的抗体向病毒结构蛋白,包括核囊和包膜糖蛋白 (GPcs).
- 了解抗体交叉保护对于开发有效治疗方法至关重要.
研究的目的:
- 评估多克隆抗体对马丘波病毒 (MACV) 糖蛋白的保护和交叉保护能力.
- 评估DNA疫苗生产的抗GPc子抗菌素对异质MACV菌株的疗效.
- 研究特定氨基酸差异对抗体中和的影响.
主要方法:
- 使用DNA疫苗对MACV菌株Carvallo GPc产生子抗菌素.
- 使用PRNT50试验对同源和异源MACV菌株进行中和活性评估.
- 利用伪型囊泡性口腔炎病毒 (VSV) 颗粒来识别GPc.中的关键氨基酸差异.
主要成果:
- 与同源菌株 (Carvallo) 相比,子抗菌素对异源MACV菌株 (Chicava和Mallale) 的中和活性较低.
- 尽管中和度较低,但抗菌剂在感染异种MACV Chicava菌株的试验猪中提供了100%的保护,即使在感染后四天内给予.
- 在MACV GPc中的122位的一个氨基酸差异被确定为显著影响抗体中和.
结论:
- 针对MACV糖蛋白的多克隆抗体可以在挑战后的环境中提供对致命感染的保护.
- 这些发现支持开发针对NW arenavirus感染的基于抗体的治疗方法.
- 确定抗体有效性的特定病毒决定因素是未来治疗设计的关键.
更多相关视频
08:13Optimized Interferon-gamma ELISpot Assay to Measure T Cell Responses in the Guinea Pig Model after Vaccination
Published on: January 20, 2019
21.6K
07:15Preparation of Pseudo-Typed H5 Avian Influenza Viruses with Calcium Phosphate Transfection Method and Measurement of Antibody Neutralizing Activity
Published on: November 22, 2021
2.2K
相关概念视频
Cross-reactivity
28.7K
Overview
28.7K
Immune Response Against Viral Pathogens
2.4K
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
2.4K
